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本文通过三年的试验资料对曲周综合治理试验区盐渍化农田生态系统不同治理水平(阶段)的生产力进行了研究。结果表明:经过综合治理,盐渍化农田生态系统的盐化生态环境有了根本的改变,土壤肥力明显好转,生产力水平大大提高,经济效益显著。即使上层(0—40cm)土体含盐量在0.6—0.7%(其中硫酸钙占2/3左右)或略高一些的情况下,只要充分发挥人工控制系统的效用,进行合理的水肥和田间管理,在短期内就能获得千斤以上的粮食亩产。
In this paper, the productivity of salinized farmland ecosystem in different management level (stage) in Songhua comprehensive control experimental area was studied through three years experimental data. The results showed that after the comprehensive management, the salinization ecological environment of the salinized farmland ecosystem has been fundamentally changed, the soil fertility has obviously improved, the productivity has been greatly improved, and the economic benefits have been significantly improved. Even if the upper (0-40cm) soil salt content of 0.6-0.7% (of which calcium sulfate accounts for about 2/3) or slightly higher case, as long as the full use of artificial control system utility, reasonable water and fertilizer and field Management, in the short term will be able to obtain more than a kilogram of grain per mu.